diff --git a/egs/mars/sd/scripts/extract_nonoverlap_segments.py b/egs/mars/sd/scripts/extract_nonoverlap_segments.py
new file mode 100644
index 000000000..ff7208664
--- /dev/null
+++ b/egs/mars/sd/scripts/extract_nonoverlap_segments.py
@@ -0,0 +1,88 @@
+from __future__ import print_function
+import numpy as np
+import os
+import sys
+import argparse
+from funasr.utils.job_runner import MultiProcessRunnerV3
+from funasr.utils.misc import load_scp_as_list, load_scp_as_dict
+import librosa
+import soundfile as sf
+from copy import deepcopy
+import json
+from tqdm import tqdm
+
+
+class MyRunner(MultiProcessRunnerV3):
+    def prepare(self, parser):
+        assert isinstance(parser, argparse.ArgumentParser)
+        parser.add_argument("wav_scp", type=str)
+        parser.add_argument("rttm_scp", type=str)
+        parser.add_argument("out_dir", type=str)
+        parser.add_argument("--min_dur", type=float, default=2.0)
+        parser.add_argument("--max_spk_num", type=int, default=4)
+        args = parser.parse_args()
+
+        if not os.path.exists(args.out_dir):
+            os.makedirs(args.out_dir)
+
+        wav_scp = load_scp_as_list(args.wav_scp)
+        rttm_scp = load_scp_as_dict(args.rttm_scp)
+        task_list = [(mid, wav_path, rttm_scp[mid]) for (mid, wav_path) in wav_scp]
+        return task_list, None, args
+
+    def post(self, result_list, args):
+        pass
+
+
+# SPEAKER R8001_M8004_MS801 1 6.90 11.39 <NA> <NA> 1 <NA> <NA>
+def calc_multi_label(rttm_path, length, sr=16000, max_spk_num=4):
+    labels = np.zeros([max_spk_num, length], int)
+    spk_list = []
+    for one_line in open(rttm_path, 'rt'):
+        parts = one_line.strip().split(" ")
+        mid, st, dur, spk_name = parts[1], float(parts[3]), float(parts[4]), parts[7]
+        if spk_name.isdigit():
+            spk_name = "{}_S{:03d}".format(mid, int(spk_name))
+        if spk_name not in spk_list:
+            spk_list.append(spk_name)
+        st, dur = int(st*sr), int(dur*sr)
+        idx = spk_list.index(spk_name)
+        labels[idx, st:st+dur] = 1
+    return labels, spk_list
+
+
+def get_nonoverlap_turns(multi_label, spk_list):
+    turns = []
+    label = np.sum(multi_label, axis=0) == 1
+    spk, in_turn, st = None, False, 0
+    for i in range(len(label)):
+        if not in_turn and label[i]:
+            st, in_turn = i, True
+            spk = spk_list[np.argmax(multi_label[:, i], axis=0)]
+        if in_turn and not label[i]:
+            in_turn = False
+            turns.append([st, i, spk])
+    return turns
+
+
+def process(task_args):
+    task_id, task_list, _, args = task_args
+    for mid, wav_path, rttm_path in task_list:
+        wav = librosa.load(wav_path, args.sr)[0] * 32767
+        multi_label, spk_list = calc_multi_label(rttm_path, len(wav), args.sr, args.max_spk_num)
+        turns = get_nonoverlap_turns(multi_label, spk_list)
+        count = 1
+        for st, ed, spk in tqdm(turns, total=len(turns), ascii=True):
+            if (ed - st) >= args.min_dur * args.sr:
+                seg = wav[st: ed]
+                save_path = os.path.join(args.out_dir, mid, spk, "{}_U{:04d}.wav".format(spk, count))
+                if not os.path.exists(os.path.dirname(save_path)):
+                    os.makedirs(os.path.dirname(save_path))
+                sf.write(save_path, seg.astype(np.int16), args.sr, "PCM_16", "LITTLE", "WAV", True)
+                count += 1
+    return None
+
+
+if __name__ == '__main__':
+    my_runner = MyRunner(process)
+    my_runner.run()